Signal Width Repair Circuit for Narrowed Low-Level Pulses
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Solution Overview
Problem
In integrated circuits, signal width issues arise due to time mismatches or long transmission paths, leading to signal narrowing and failure to meet minimum use requirements for next-stage circuits, affecting normal operation.
Innovation Solution
A signal width repair circuit comprising a delay circuit, a signal reconstruction circuit, and a signal selection circuit, which delays and repairs low-level input signals to ensure the output signal width meets preset requirements, using components like NAND gates and multiplexers to selectively output a target signal with the desired width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If signal transmission path is extended or time mismatch occurs, then signal transmission distance or circuit integration is improved, but signal width narrows and fails to meet minimum requirements
Solution Approach 1:
The delay circuit performs preliminary action by delaying one of the input signals before it enters the logic circuit. This preliminary delay compensates for the signal width narrowing that would otherwise occur due to long transmission paths or time mismatches, ensuring the output signal meets minimum width requirements.
Solution Approach 2:
The delay circuit acts as an intermediary element between the input signals and the logic circuit. By introducing a controlled delay to one signal path, it mediates the time mismatch between signals, allowing them to overlap properly and maintain adequate signal width at the output.
2Manufacturing precision
If signal width repair is performed using delay and reconstruction circuits, then signal width requirement is satisfied, but circuit complexity increases
Solution Approach 1:
The signal width repair function is segmented into distinct modular components: a delay circuit for timing adjustment, a logic circuit for signal processing, and a multiplexer for signal selection. This segmentation allows each component to perform its specific function efficiently while making the overall system easier to design, analyze, and implement.
Solution Approach 2:
The multiplexer dynamically selects between the original input signal and the delayed/reconstructed signal based on which one satisfies the width requirement. This dynamic adaptation allows the circuit to automatically adjust to different input conditions without requiring complex control logic or multiple fixed configurations.
Data Source
AI summary
A signal width repair circuit and method, and an electronic device are provided. The signal width repair circuit includes: a delay unit, configured to receive an input signal, and delay the input signal for a preset duration to obtain a delayed signal, the input signal being a low-level signal; a signal reconstruction unit, configured to receive the input signal and the delayed signal, and repair the input signal and the delayed signal to obtain a repaired signal; and a signal selection unit, configured to receive the input signal and the repaired signal and select one of the input signal and the repaired signal for output, to obtain a target signal that has a width satisfying a preset width, the preset duration being equal to or greater than a duration with the preset width.